(Chapter 7) for membrane receptors, and again in Part Three (Chapter 20) for antibodies. In this manner, the student is helped to see the basic foundations upon which more complex functions such as homeostatic neuroendocrine and immune responses are built.Another example: Rather than presenting, in a single chapter, a gland-by-gland description of all the hormones, we give a description of the basic principles of endocrinology in Chapter 10, but then save the details of individual hormones for later chapters. This permits the student to focus on the functions of the hormones in the context of the homeostatic control systems in which they participate.Alternative SequencesGiven the inevitable restrictions of time, our organization permits a variety of sequences and ap- proaches to be adopted. Chapter 1 should definitely be read first as it introduces the basic themes that dominate the book. Depending on the time available, the instructor’s goals, and the students’ backgrounds in physical science and cellular and molecular biology, the chapters of Part One can be either worked through systematically at the outset or be used more selectively as background reading in the contexts of Parts Two and Three.In Part Two, the absolutely essential chapters are, in order, Chapters 7, 8, 10, and 11, for they present the basic concepts and facts relevant to homeostasis, intercellular communication, signal transduction, nervous and endocrine systems, and muscle. This material, therefore, is critical for an understanding of Part Three.We believe it is best to begin the coordinated body functions of Part Three with circulation (Chap- ter 14), but otherwise the chapters of Part Three, as well as Chapters 9, 12, and 13 of Part Two, can be re- arranged and used or not used to suit individual instructor’s preferences and time availability.Revision HighlightsThere were two major goals for this revision: (1) to redo the entire illustration program (and give the
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